Dynamic vision sensor based on amplifier multiplexing

The invention relates to the field of integrated circuits, and provides a sensor which uses a multiplexing structure to achieve two functions of continuously monitoring light current and quantitatively reading light intensity. The technical scheme adopted in the invention is: in a dynamic vision sensor based on amplifier multiplexing, a photodiode PD is connected with the source level of a logarithmic tube Mfb, and an amplifier A1 is added between the grid and the source electrode of the Mfb to constitute a negative feedback circuit for converting the light current detected by the photodiode into a voltage in a logarithmic manner; the grid of the logarithmic tube Mfb is further connected with a capacitor C1, and a switch SW3 is further added between the capacitor C1 and an amplifier A2; one end of a switch SW4 is connected with the input end of the amplifier A2, and the other end of the switch SW4 is connected with a reference voltage Vref; and a capacitor C2 and a reset switch SW2 are respectively connected with the amplifier A2 in parallel, and a capacitor C3 and a switch SW1 are connected to both ends of the amplifier A2 in parallel after being connected in series. The dynamic vision sensor based on amplifier multiplexing provided by the invention is mainly applied to the design and manufacture of integrated circuits.